12020333123 has 4 divisors (see below), whose sum is σ = 12727411560. Its totient is φ = 11313254688.

The previous prime is 12020333069. The next prime is 12020333161. The reversal of 12020333123 is 32133302021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020333123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020333095 and 12020333104.

It is not an unprimeable number, because it can be changed into a prime (12020333323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353539193 + ... + 353539226.

It is an arithmetic number, because the mean of its divisors is an integer number (3181852890).

Almost surely, 2^12020333123 is an apocalyptic number.

12020333123 is a deficient number, since it is larger than the sum of its proper divisors (707078437).

12020333123 is an equidigital number, since it uses as much as digits as its factorization.

12020333123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707078436.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12020333123 its reverse (32133302021), we get a palindrome (44153635144).

The spelling of 12020333123 in words is "twelve billion, twenty million, three hundred thirty-three thousand, one hundred twenty-three".